<template>
  <div class="todo-container">
    <div class="todo-wrap">
      <Header @addNewTodo="addNewTodo" />
      <List
        :todoList="todoList"
        @changeChecked="changeChecked"
        @deleteTodo="deleteTodo"
      />
      <Footer
        :todoList="todoList"
        @deleteAllTodo="deleteAllTodo"
        @allChecked="allChecked"
        :changeDone="changeDone"
      />
    </div>
  </div>
</template>

<script>
import { v4 as uuidV4 } from "uuid";

import Header from "./component/Header/Header.vue";
import Footer from "./component/Footer/Footer.vue";
import List from "./component/List/List.vue";
export default {
  name: "App",
  data() {
    return {
      todoList: [
        { id: uuidV4(), thing: "唱", done: false },
        { id: uuidV4(), thing: "跳", done: false },
        { id: uuidV4(), thing: "rap", done: false },
      ],
    };
  },
  components: {
    Header,
    Footer,
    List,
  },
  methods: {
    addNewTodo(newTodo) {
      this.todoList.unshift(newTodo);
    },
    changeChecked(id) {
      this.todoList = this.todoList.map((item) =>
        item.id === id ? { ...item, done: !item.done } : item
      );
    },
    deleteTodo(id) {
      this.todoList = this.todoList.filter((item) => item.id !== id);
    },
    deleteAllTodo() {
      this.todoList = this.todoList.filter((item) => !item.done);
    },
    allChecked(e) {
       this.todoList = this.todoList.map((item) => ({
        ...item,
        done: e.target.checked,
      }));
    },
  },  
  computed: {
    changeDone() {
      return this.todoList.filter((item) => item.done).length;
    },
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>